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Automated unit test generation is critical for software quality but traditional structure-driven methods often lack the semantic understanding required to produce realistic inputs and oracles. Large language models (LLMs) address this…

Software Engineering · Computer Science 2026-01-01 Bei Chu , Yang Feng , Kui Liu , Zhaoqiang Guo , Yichi Zhang , Hange Shi , Zifan Nan , Baowen Xu

The latest paradigm shift in software development brings in the innovation and automation afforded by Large Language Models (LLMs), showcased by Generative Pre-trained Transformer (GPT), which has shown remarkable capacity to generate code…

Software Engineering · Computer Science 2024-06-12 Xiaoyin Wang , Dakai Zhu

Language models have shown remarkable proficiency in code generation; nevertheless, ensuring type correctness remains a challenge. Although traditional methods, such as constrained decoding, alleviate this problem by externally rejecting…

Programming Languages · Computer Science 2026-02-09 Zhechong Huang , Zhao Zhang , Ruyi Ji , Tingxuan Xia , Qihao Zhu , Qinxiang Cao , Zeyu Sun , Wiggin Zhou , Yingfei Xiong

Python's dynamic type system, while offering significant flexibility and expressiveness, poses substantial challenges for static analysis and automated tooling, particularly in unannotated or partially annotated codebases. Existing type…

Software Engineering · Computer Science 2026-04-08 Ali Aman , Muhammad Asaduzzaman , Shaowei Wang

Unit testing is essential for ensuring software reliability and correctness. Classic Search-Based Software Testing (SBST) methods and concolic execution-based approaches for generating unit tests often fail to achieve high coverage due to…

Software Engineering · Computer Science 2025-09-30 Bei Chu , Yang Feng , Kui Liu , Hange Shi , Zifan Nan , Zhaoqiang Guo , Baowen Xu

Automated unit test generation using large language models (LLMs) holds great promise but often struggles with generating tests that are both correct and maintainable in real-world projects. This paper presents KTester, a novel framework…

Software Engineering · Computer Science 2026-02-09 Anji Li , Mingwei Liu , Zhenxi Chen , Zheng Pei , Zike Li , Dekun Dai , Yanlin Wang , Zibin Zheng

Large Language Models (LLMs) have demonstrated promising capabilities for code generation. While existing benchmarks evaluate the correctness and efficiency of LLM-generated code, the potential linguistic bias - where code quality varies…

Software Engineering · Computer Science 2025-05-02 Weipeng Jiang , Xuanqi Gao , Juan Zhai , Shiqing Ma , Xiaoyu Zhang , Ziyan Lei , Chao Shen

Dynamic languages (such as Python and JavaScript) offer flexibility and simplified type handling for programming, but this can also lead to an increase in type-related errors and additional overhead for compile-time type inference. As a…

Software Engineering · Computer Science 2026-04-06 Teyu Lin , Minghao Fan , Huaxun Huang , Zhirong Shen , Rongxin Wu

Modern Large Language Model (LLM)-based programming agents often rely on test execution feedback to refine their generated code. These tests are synthetically generated by LLMs. However, LLMs may produce invalid or hallucinated test cases,…

Software Engineering · Computer Science 2026-02-27 Hamed Taherkhani , Jiho Shin , Muhammad Ammar Tahir , Md Rakib Hossain Misu , Vineet Sunil Gattani , Hadi Hemmati

The performance of modern software systems is critically dependent on their complex configuration options. Building accurate performance models to navigate this vast space requires effective sampling strategies, yet existing methods often…

Software Engineering · Computer Science 2026-01-09 Xin Wang , Zhenhao Li , Zishuo Ding

Large language models (LLMs) have demonstrated impressive capabilities in code generation, achieving high scores on benchmarks such as HumanEval and MBPP. However, these benchmarks primarily assess functional correctness and neglect broader…

Software Engineering · Computer Science 2025-08-21 Scott Blyth , Sherlock A. Licorish , Christoph Treude , Markus Wagner

Recent advances in large language models for test case generation have improved branch coverage via prompt-engineered mutations. However, they still lack principled mechanisms for steering models toward specific high-risk execution…

Software Engineering · Computer Science 2026-04-21 Khang Tran , Khoa Nguyen , Cristian Borcea , NhatHai Phan

Python is a popular dynamic programming language, evidenced by its ranking as the second most commonly used language on GitHub. However, its dynamic type system can lead to potential type errors, leading researchers to explore automatic…

Software Engineering · Computer Science 2023-07-19 Yun Peng , Chaozheng Wang , Wenxuan Wang , Cuiyun Gao , Michael R. Lyu

Software testing is a core discipline in software engineering where a large array of research results has been produced, notably in the area of automatic test generation. Because existing approaches produce test cases that either can be…

Software Engineering · Computer Science 2023-10-11 Laura Plein , Wendkûuni C. Ouédraogo , Jacques Klein , Tegawendé F. Bissyandé

Traditional approaches to test case generation often involve manual effort and incur significant computational overhead. Additionally, these approaches are not scalable, and hence, unsuitable for complex software systems. Recently, Large…

Software Engineering · Computer Science 2026-05-05 Kushal Jasti , Tejamani Prashanth Sahu , Rishitha Pentyala , Muvvala Mohit , Vivek Yelleti

Property-based testing (PBT), while an established technique in the software testing research community, is still relatively underused in real-world software. Pain points in writing property-based tests include implementing diverse random…

Software Engineering · Computer Science 2024-07-23 Vasudev Vikram , Caroline Lemieux , Joshua Sunshine , Rohan Padhye

Programming languages like P4 enable specifying the behavior of network data planes in software. However, with increasingly powerful and complex applications running in the network, the risk of faults also increases. Hence, there is growing…

Programming Languages · Computer Science 2022-06-08 Matthias Eichholz , Eric Hayden Campbell , Matthias Krebs , Nate Foster , Mira Mezini

Large language models (LLMs) have achieved notable success in code generation. However, they still frequently produce uncompilable output because their next-token inference procedure does not model formal aspects of code. Although…

Machine Learning · Computer Science 2025-05-09 Niels Mündler , Jingxuan He , Hao Wang , Koushik Sen , Dawn Song , Martin Vechev

The strong performance of large language models (LLMs) raises extensive discussion on their application to code generation. Recent research suggests continuous program refinements through visible tests to improve code generation accuracy in…

Software Engineering · Computer Science 2025-05-26 Chao Lei , Yanchuan Chang , Nir Lipovetzky , Krista A. Ehinger

Python's dynamic typing system offers flexibility and expressiveness but can lead to type-related errors, prompting the need for automated type inference to enhance type hinting. While existing learning-based approaches show promising…

Software Engineering · Computer Science 2024-08-14 Chong Wang , Jian Zhang , Yiling Lou , Mingwei Liu , Weisong Sun , Yang Liu , Xin Peng